Naval shipworms primarily feed on wood. They are able to do so because of enzymes produced by the nitrogen-fixing bacteria within them. Teredo navalis use their shell to cut into the wood. The pieces are then transported into the mouth via cilia. Organisms from the water may also be taken up for food via the inhalant siphon. Free-swimming veligers feed on plankton.
Plant Foods: wood, bark, or stems; phytoplankton
Other Foods: microbes
Foraging Behavior: filter-feeding
Primary Diet: herbivore (Lignivore); planktivore
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